Fondant/gumpaste Bows

I made a bow in one of my classes where we cut out the strips, formed them, and let them set to harden. We left ours for 3 weeks, but does anyone know how long they really need to sit out for so they will not crumple when put together? They were 50/50 fondant and gumpaste. Can you do one or the other forms? Any input would be awesome as I am new to decorating and I need some ideas.

For flowers and bows I always use pure gum paste...wilton's pre made gum paste. I like the fact that it can dry so quickly. You can do all kinds of movement in your bow's 'tails' and hold them for a few seconds and they'll stay and dry that way. You can roll it very thin too without cracking. Gum paste is edible but not very tasty I don't think. Although I did have a relative of mine eat the flowers off an anniversary cake I did...he said they tasted like Necco wafers...can't say I'm crazy about those either!

I've used left over flowers before that I had stored for several months. I kept them in a covered box away from harsh light.